/*
 * libwebsockets - small server side websockets and web server implementation
 *
 * Copyright (C) 2010-2018 Andy Green <andy@warmcat.com>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation:
 *  version 2.1 of the License.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 *  MA  02110-1301  USA
 *
 * included from libwebsockets.h
 */


/*! \defgroup pur Sanitize / purify SQL and JSON helpers
 *
 * ##Sanitize / purify SQL and JSON helpers
 *
 * APIs for escaping untrusted JSON and SQL safely before use
 */
//@{

/**
 * lws_sql_purify() - like strncpy but with escaping for sql quotes
 *
 * \param escaped: output buffer
 * \param string: input buffer ('/0' terminated)
 * \param len: output buffer max length
 *
 * Because escaping expands the output string, it's not
 * possible to do it in-place, ie, with escaped == string
 */
LWS_VISIBLE LWS_EXTERN const char *
lws_sql_purify(char *escaped, const char *string, int len);

/**
 * lws_json_purify() - like strncpy but with escaping for json chars
 *
 * \param escaped: output buffer
 * \param string: input buffer ('/0' terminated)
 * \param len: output buffer max length
 *
 * Because escaping expands the output string, it's not
 * possible to do it in-place, ie, with escaped == string
 */
LWS_VISIBLE LWS_EXTERN const char *
lws_json_purify(char *escaped, const char *string, int len);

/**
 * lws_filename_purify_inplace() - replace scary filename chars with underscore
 *
 * \param filename: filename to be purified
 *
 * Replace scary characters in the filename (it should not be a path)
 * with underscore, so it's safe to use.
 */
LWS_VISIBLE LWS_EXTERN void
lws_filename_purify_inplace(char *filename);

LWS_VISIBLE LWS_EXTERN int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
			int len);
LWS_VISIBLE LWS_EXTERN int
lws_plat_write_file(const char *filename, void *buf, int len);

LWS_VISIBLE LWS_EXTERN int
lws_plat_read_file(const char *filename, void *buf, int len);

LWS_VISIBLE LWS_EXTERN int
lws_plat_recommended_rsa_bits(void);
///@}